DESCRIPTION:

When Eccet calls a script due to a mouse click/move or a
keypress, it will fill in the root.global.pointer struct.
This substructures describes the pointed-to pixel:
- x/y (int) the coordinates of the pixel.
- depth (int) the 24.8 fixedpoint depth value for the pixel.
- color.r.g.b (3 int) the 16 bit color of the pixel.